Dear Editor,The irreversible pan-ErbB tyrosine kinase inhibitors(TKIs),including neratinib and pyrotinib,demonstrated more complete inhibition towards ErbB-family and promising antitumor activity compared to lapatinib...Dear Editor,The irreversible pan-ErbB tyrosine kinase inhibitors(TKIs),including neratinib and pyrotinib,demonstrated more complete inhibition towards ErbB-family and promising antitumor activity compared to lapatinib,a reversible TKI.1 In the phase III NALA study for HER2-positive metastatic breast cancer(MBC)who were progressed after two lines of HER2-targeted regimens,2 significant improvement was observed in progression-free survival(PFS)in patients receiving neratinib combined with capecitabine when compared to lapatinib plus capecitabine(L+C)group.However,the 2.2-month PFS improvement in neratinib plus capecitabine cohort failed to translate to a significant benefit in the overall survival(OS,24.0 vs 22.2 months,P=0.2086).2 While another irreversible TKI,pyrotinib combined with capecitabine(P+C)achieved clinically and statistically significant improvement in the PFS and a trend of benefits in the OS when compared to the L+C group,based on the interim analysis(with the cutoff of March 31,2019)of the phase III PHOEBE study.3 Generally speaking,current evidence was still limited regarding the survival data of irreversible TKIs.展开更多
基金CAMS Innovation Fund for Medical Sciences(CIFMS,2021-I2M-1-014)National Nature Science Foundation of China(82103634)China Postdoctoral Science Foundation(2020M680455).
文摘Dear Editor,The irreversible pan-ErbB tyrosine kinase inhibitors(TKIs),including neratinib and pyrotinib,demonstrated more complete inhibition towards ErbB-family and promising antitumor activity compared to lapatinib,a reversible TKI.1 In the phase III NALA study for HER2-positive metastatic breast cancer(MBC)who were progressed after two lines of HER2-targeted regimens,2 significant improvement was observed in progression-free survival(PFS)in patients receiving neratinib combined with capecitabine when compared to lapatinib plus capecitabine(L+C)group.However,the 2.2-month PFS improvement in neratinib plus capecitabine cohort failed to translate to a significant benefit in the overall survival(OS,24.0 vs 22.2 months,P=0.2086).2 While another irreversible TKI,pyrotinib combined with capecitabine(P+C)achieved clinically and statistically significant improvement in the PFS and a trend of benefits in the OS when compared to the L+C group,based on the interim analysis(with the cutoff of March 31,2019)of the phase III PHOEBE study.3 Generally speaking,current evidence was still limited regarding the survival data of irreversible TKIs.
